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This is pretty easy to answer.
The fact is that no matter how smooth a surface appears to the naked eye, at the microscopic level there are bound to be imperfections. Think of a glassy smooth marble - it rolls effortlessly (almost!) and feels smooth but if you look at it under a microscope, you will see many imperfections, jagged edges and cracks.
Similarly, a glass slab has these imperfections. Over a large area of the slab, these will cause a large frictional force that becomes obvious when you try sliding them against one another.
What else can I help you with?
Use sliding friction in a sentence?
Sliding friction occurs when two surfaces slide against each other, creating resistance and frictional force that opposes the motion.
What occurs when two solid surfaces slide over each other?
When two solid surfaces slide over each other, a frictional force is generated which opposes the motion. This frictional force can create heat due to the material deformation at the contact points, causing wear and eventually leading to surface damage or failure. Lubricants can be used to reduce the friction and wear between the solid surfaces.
What force is needed to slide a mass of 54 kg at a constant velocity along a surface on which the coeffcient of friction is 0.43?
The force needed to slide the mass at a constant velocity is equal in magnitude and opposite in direction to the frictional force. The frictional force is calculated as the coefficient of friction multiplied by the normal force (frictional force = coefficient of friction * normal force). Hence, the force needed would be 0.43 times the weight of the mass (force = coefficient of friction * mass * gravity).
Why a force acting on a body is called a sliding vector?
A force acting on a body is not typically called a "sliding vector." The term "sliding vector" may refer to a force vector that is parallel to a surface, which could cause the body to slide if it overcomes static friction. The force could also be called a frictional force if it opposes the relative motion of the body.
What SI unit is used to measure the thickness of a glass slide?
SI unit is used to measure the thickness of a glass slide is very small.it is measured in mm.
Why the rough surface have the greatest frictional force?
A rough surface has a greater frictional force because the asperities or tiny bumps on the surface interlock with each other, causing more resistance to motion when two surfaces slide against each other. This increased interaction between the surfaces results in a higher frictional force compared to smoother surfaces.
Use sliding friction in a sentence?
Sliding friction occurs when two surfaces slide against each other, creating resistance and frictional force that opposes the motion.
What occurs when two solid surfaces slide over each other?
When two solid surfaces slide over each other, a frictional force is generated which opposes the motion. This frictional force can create heat due to the material deformation at the contact points, causing wear and eventually leading to surface damage or failure. Lubricants can be used to reduce the friction and wear between the solid surfaces.
Describe two ways to change the frictional force between two sold surfaces?
Increasing the roughness or texture of the surfaces will typically increase the frictional force between them by providing more contact points for interlocking. Applying a lubricant or reducing the roughness of the surfaces can decrease the frictional force by allowing the surfaces to slide past each other more easily.
Because of a frictional force of 100 N a force of 1 meter must be applied to a textbook in order to slide it along the surface of a wooden table What is the unbalanced force on the book?
0.2 N
What force is used to overcome friction?
The force used to overcome friction is the force of applied external pressure or kinetic energy. This force acts in the opposite direction to the frictional force, allowing objects to move past each other or slide across a surface with reduced resistance.
What is the friction that occurs when 2 surfaces slide past one another?
The friction that occurs when two surfaces slide past one another is called sliding friction. It is caused by the resistance between the molecules of the two surfaces as they interact and slide against each other. This frictional force opposes the motion of the two surfaces relative to each other.
What is the force that resists the motion of one surface across another?
it is the frictional force or force of friction that resists the motion of one surface over the another. but, interestingly, it is the force which helps us to walk, to swim... aman gupta
What force is needed to slide a mass of 54 kg at a constant velocity along a surface on which the coeffcient of friction is 0.43?
The force needed to slide the mass at a constant velocity is equal in magnitude and opposite in direction to the frictional force. The frictional force is calculated as the coefficient of friction multiplied by the normal force (frictional force = coefficient of friction * normal force). Hence, the force needed would be 0.43 times the weight of the mass (force = coefficient of friction * mass * gravity).
What are all factors affecting frictional force?
Factors affecting frictional force include the roughness of the surfaces in contact, the force pressing the surfaces together, the nature of the materials involved, and any lubricants present. These factors determine the amount of resistance encountered when attempting to slide one surface over the other.
What force is produced when two materials rub together?
When two materials rub together, frictional force is produced. Friction is caused by the resistance between the two surfaces as they try to slide past each other, which ultimately opposes the motion. The amount of friction depends on factors such as the roughness of the surfaces and the force pressing them together.
Is it true that frictional force on a sliding body on a plane is always directed at the angle of friction to the normal?
The frictional force on a sliding body on a plane will be acting parallel to the plane against the motion of the body. But the magnitude of the (kinetic) friction force is proportional to the weight component normal to the plane. The weight component parallel to the plane is the force that tends to slide the body down the inclined plane. When the sliding body has acquire steady velocity, the friction force is equal to the body's sliding force.
